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Re: [babel] information model supports IPv6 operation only

David Schinazi <dschinazi.ietf@gmail.com> Thu, 04 February 2021 21:14 UTC

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From: David Schinazi <dschinazi.ietf@gmail.com>
Date: Thu, 04 Feb 2021 13:14:00 -0800
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To: "STARK, BARBARA H" <bs7652@att.com>
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Subject: Re: [babel] information model supports IPv6 operation only
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The added language looks good to me.
One optional note, we can now replace references to
I-D.ietf-babel-rfc6126bis with RFC8966 :-)

David

On Thu, Feb 4, 2021 at 5:56 AM STARK, BARBARA H <bs7652@att.com> wrote:

> Hi Babel WG,
> Donald suggested I make sure the WG members were comfortable with the
> language I've now included (to resolve IESG / IETF LC comments) in the info
> model draft, to express the fact it doesn't include parameters for
> operating Babel over IPv4.
>
> At the end of the abstract I added "This information model only includes
>    parameters and parameter values useful for managing Babel over IPv6."
>
> At the end of the Introduction I added the paragraph:
>    This information model only includes parameters and parameter values
>    useful for managing Babel over IPv6.  This model has no parameters or
>    values specific to operating Babel over IPv4, even though
>    [I-D.ietf-babel-rfc6126bis] does define a multicast group for sending
>    and listening to multicast announcements on IPv4.  There is less
>    likelihood of breakage due to inconsistent configuration and
>    increased implementation simplicity if Babel is operated always and
>    only over IPv6.  Running Babel over IPv6 requires IPv6 at the link
>    layer and does not need advertised prefixes, router advertisements or
>    DHCPv6 to be present in the network.  Link-local IPv6 is widely
>    supported among devices where Babel is expected to be used.  Note
>    that Babel over IPv6 can be used for configuration of both IPv4 and
>    IPv6 routes.
>
> If this language is objectionable, please let me know. Thx,
> Barbara
>
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